Gas range



w. D. ANTRIM Dec. 15, 1936.

GAS RANGE Filed Oct. l2, 1934 2 SheeLs-Shee'c4 2 i: OFFICE UNITED STATES GAS RANGE William D. Antrim, Gloucester, N. l., assignor to Roberts & Mander Stove Company, Philadelphia, Pa., a corporation of Pennsylvania Application October 12, 1934, Serial No. 748,149

2 Claims. (Cl. 126-39) This invention relates to new and useful im- The casing in the present instance encloses relaprovements in gas ranges and more particularly tively superimposed chambers A and B constito improvements in the construction of the oven tuting respectively an oven and a burner chamcasings thereof adjacent the burner intake. ber. As shown in the drawings plates 3, bent to The principal object of the invention is to proform a series of supports 4 for the customary vide a gas range having an oven which is novelly oven racks (not shown), cooperate together with constructed at the burner intake to effectually a bottom plate 5, to form the oven within the balance the pressure or vacuum at the intake and casing l, the plates 3 being spaced from the inner outlet respectively of said burner and prevent exwalls 2, 2 of the oven and having openings at the tinguishment of the burner llame. top thereof to afford communication between the l0 Other objects and features of the invention as burner chamber B and the interior of the oven A, well as the details of construction thereof are set and openings are formed in the oven roof and forth hereinafter and shown in the accompanyallow the combustion gases to escape through a ing drawings, in which: suitable conduit extending toward the rear of the Fig. l is an elevational View in section through oven casing for connection with a flue (not l5 the oven of a gas range on line I-I, Fig. 2. shown). A plate 6 is secured to the underside of Fig. 2 is an elevational View in section on line the oven bottom 5 in spaced relation with respect 2 2, Fig. 1. thereto so as to prevent the flame from the burn- Fig. 3 is an end View of the mixing chamber of er impinging directly upon said plate 5. the burner. A bottom section 'I is mounted at the lower end 20 Fig, 4 is a view in perspective showing the eonof the casing l in spaced relation with respect to struction of the burner support and air inlet. the plate 5 and COnStitllteS the bottom 0f the Fig. 5 is a view in perspective of a modied burner chamber B. The bottom section 1 is supform of support for the end of the mixing tube of ported ilpen angle bars 3 Secured t0 the easing the burner; and I at one side thereof and to a front flame mem- 25 Fig. 61s a view in section of another modioaber I0 of the Oven 0n the Opposite side as clearly tion of the inventionl shown in Fig. 2, the said bottom section 1 and As constructed heretofore, the oven burner is angle baiS 8 being S0 allanged t0 pIOVde an' inlet usually located in the chamber under the oven Openings 8e t0 the burner Chamber. The side and the heated gases pass therefrom ini-,0 and Walls of the burner chamber B are provided with 30 about said oven. Consequently when the oven SlippeitS l l fO the CllStOInaiy grill 01' bIOilel door is opened quickly, a pressure or vacuum is rack (not shown). In the present instance the formed in the oven and burner chamber, which frOnt of the Casing I is open and iS provided With tends to draw air through the mixing tube and a door 01" Other CIOSure l2 Which, as shown in into the burner thus thinning the mixture of gas Fig. 2, iS hingedly Connected t0 One Wall 0f Said 35 and 3jr and jin Some cases,` Causing a, flame 1-,0` be Casing, and affords ready aCCeSS t0 the interim' Of produced at the intake end of the mixing tube. bOtll the OVen and burner Chamber. So too, if the oven door is closed quickly, the air A bnl'nei' I3 having a lnXing tubev I4 Open at in the Oven is Obviously placed under pressure and its fl'OIlt end l5 is mounted horizontally Within 'the 40 this pressure is very often sufcient to extinguish Chanel-lei' B 0f the eaSing Substantially midway 40 the flame, particularly when the same is burning between the bottom of the oven and the grill or low. These difficulties are obvious1y troublesome broiler rack supports II. Gas is Conducted to the and may at times prove to be extremely dangerblnnel I3 by means Of a pipe i6 leading IOIn any ous. source of supply and preferably located between By the present invention the undesirable charthe Casing l and the inner Wall 0r lining 2 there- 45 acteristics mentioned above are eliminated, and of. The pipe I5 iS Connected toa nozzle I'I formthe pressure or vacuum existing within the burning a palt 0f the burner i3 and extending a Short er chamber is effectively balanced at the intake diStanCe into the mixing tube I4 thereof. An and outlet of the burner, thereby eliminating any Opening 01 ail' inlet i3 iS plOVided in the forward possibility of a so-called flash back or extinguishend of the mixing tube It and the amount 0f air 50 ment of the burner flame. admitted tl'llOllgh Said Opening fOr mixture with Referring now more particularly to the drawthe gas may be readily regulated and Controlled ings, reference numeral I indicates the casing of by the usual damper I9. an oven structure, having inner walls or lining 2 The outer end of the mixing tube I4 of the spaced from said casing as clearly shown in Fig. 1. burner I3 is supported at a recess in the chamber 55 wall by a flange 20 projecting from a ring 2I which forms a part of a plate 22 secured to the lining or inner wall 2 of said casing by any suitable means such as bolts 23. In order to carry out the present invention it is desirable that the edge of the supporting ange 20 continuously contact the peripheral surface of the outer end of the mixing tube I4 of the burner I3 for the purpose of preventing the passage of air to or from the burner chamber B between the ring 2I and the end of the burner supported thereby. Td facilitate regulation of the damper I9 to control the mixture of gas and air in the burner an opening 24 is formed in the casing I directly in front of the end face of the burner tube I4. This opening 24 is normally closed by means of an imperforate 'cap 25 which is removably secured in the casing I by means of a spring clip 26 secured to the said cap and which engages the inturned flanges 21 on the casing I.

As shown in Fig. l of the drawings, partitions 28 extending between the casing I and the inner wall or lining 2 thereof form a recess in the side wall and enclose the space betwen the opening 24 in the casing and the end of the mixing tube, the said partitions being arranged so that the recess or pocket thus formed extends a substantial distance below the said end of the mixing tube and said opening. The partition 28 at the top of the space between the opening and the end of the mixing tube I4 is cut away to allow for the passage of the gas supply tube I6.

In the present instance a relatively large opening 29 is formed in the plate 22 below the ring 2I thereof for the purpose of affording communication between the enclosed space or recess previously described and the chamber B below the plane of the burner I3 mounted therein.

It will be readily perceived that construction of the oven casing at the intake end of the burner in accordance with the present invention prevents the entrance of fresh air into the burner through the side walls of the casing and requires that all of the air necessary for mixture with the gas in the mixing tube I4 of the burner pass lthrough the opening 29 from a point or points below the burner. In'this manner the pressure or Vacuum at the intake and outlet respectively of the burner will at all times be in perfect balance, and therefore differential pressures or vacua at the intake or outlet of the burner causing fiash back or extinguishment of the burner flame will be entirely eliminated.

The construction of the oven casing previously described is susceptible of numerous ramifications without departing from the spirit of the invention and for the purpose of illustration a modification of the invention is disclosed in Fig. 5 of the drawings wherein the end of the mixing tube of the burner is mounted in a ring 2Ia of a plate 22a. The upper half portion of the circular ring 2Ia is provided with a downwardly projecting flange 2a, the edge of which is arranged to continuously contact the adjacent outer surface of the end of the mixing tube of the burner and prevent communication throughout its extent between the spa'ce at the front of said burner and the chamber B, whereas the bottom of the end 0f the burner is supported in spaced relation from the ring 2 Ia by means of a finger or arm 29a for the purpose of providing openings 29h for communication between the space at the front of the burner and the chamber B below the plane of said burner.

The present invention may be readily adapted to existing gas range constructions wherein the intake end of the burner mixing tube I4 is mounted in an opening 30a in the oven casing I, to permit air from without the oven casing to be supplied to the mixing tube in the customary manner heretofore. In the adaptation of the present invention to this construction, an opening 30 is formed in the oven wall structure below the intake end of the mixing tube I4 as shown in Fig. 6 and this opening 30 and the intake end of the mixing tube I4 of the burner are enclosed by means of a cover or casing member 3| which is hingedly connected as at 32 to the oven casing I to form a recess at one side wall of the casing similar in nature to that previously described. In this manner it will be readily perceived that air entering the intake end of the mixing tube I4 for mixture with the gas fuel must pass through opening 30 from a point below the burner, thereby effectively balancing the pressure or vacuum existing at the intake and outlet respectively of the burner.

Still other casing constructions may be adopted to effectually carry out the invention, and while several forms thereof have been set forth for the purpose of description it is not intended that the invention be precisely limited thereto where within the scope of the annexed claims.

What I claim is:

l. The combination in a gas range structure of an oven; a burner chamber arranged in communication with said oven; a burner in said chamber; a mixing tube extending into said chamber and being connected to said burner; and means supporting the inlet end of said tube in predetermined spaced relation to a wall of the structure; said means comprising a supporting plate attached to said wall and having a ange thereon directed into the burner chamber, said flange being provided with an inwardly directed flange for supporting the inlet end of said tube at the periphery thereof.

2. The combination a gas range structure of an oven; a burner chamber arranged in communication with said oven; a burner in said chamber; a mixing tube extending into said chamber and being connected to said burner; and means supporting the inlet end of said tube in predetermined spaced relation to a wall of the structure; said means comprising a supporting vplate attached to said wall and having a ange thereon directed into the burner chamber, said flange being provided with an inwardly directed flange and a radially extending arm for supporting the inlet end of said tube at the periphery thereof.

WILLIAM D. ANTRIM. 

